So the advantage of Paperspace would be that you can play many more games than you can on GeForce NOW.
Some publishers have been very anti-competitor regarding it and taken down their entire libraries but there is still a ton to play.
* allegedly. Tried to set up Paperspace and Parsec without result.
It really depends on the game.
For instance, Factorio, which is enormously popular on HN, has a perfectly functioning Linux version. Many other games do too, and some games even perform better on Linux than on Windows, not to mention having a better user experience on Linux (especially if you are technical and know what you're doing).
I have an old Linux laptop, and Factorio performs well enough in single player, but I run in to serious performance issues on multiplayer. It's be nice to be able to run this Linux game on a more performant Linux machine, without shelling out the $$$ for a new gaming rig.
Further, I'd like to avoid Windows as much as possible, where it can be avoided.